NAME
WWW::Webrobot::Statistic - Plain simple statistic
SYNOPSIS
use WWW::Webrobot::Statistic;
my $s = WWW::Webrobot::Statistic -> new();
$s -> add(3, 4, 5);
$s -> add(6, 7);
print "n: ", $s->n, "\n";
print "min: ", $s->min, "\n";
print "max: ", $s->max, "\n";
print "mean: ", $s->mean, "\n";
print "median: ", $s->median, "\n";
print "standard deviation: ", $s->standard_deviation, "\n";
print "quadratic mean: ", $s->quad_mean, "\n";
DESCRIPTION
Does some plain statistics. This module will store the complete data set on demand only.
METHODS
- $s->new(%options)
-
Constructor. Options:
- $s->n
-
Number of elements added.
- $s->min
-
Smallest element.
- $s->max
-
Largest element.
- $s->mean
-
Arithmetic mean.
- $s->quad_mean
-
Quadratic mean.
- $s->standard_deviation
-
Standard deviation, base n-1
- $s->median
-
Median. Gives the arithmetic mean of the two "mean" elements if the number of elements is even.